According to the review, he is getting artefacts even with non-moving subjects.
If non moving, I haven't seen it. I just read the part he mentioned that, though he didn't show the artefacts. I found that even on a stable setup, by pressing the shutter button shake can be induced. It's that sensitive. There's a setting inside the menu to have a delay to the shutter, by having that it helps. Certainly the best is still a cable release or wifi OIS app.